<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            width: 500px;
            height: 500px;
            background-color: pink;
        }
    </style>
</head>
<body>
    <div></div>
    <script>
        /* 你的问的问题 */
        var div = document.querySelector("div")
        function fn1(){
            console.log(111111111111111);
        }
        function fn2(){
            console.log(2222222222);
        }

        div.onclick = fn1;
        div.oncontextmenu = fn1;

    </script>
</body>
</html>